Electric heating and cooking stove.



A. 0. CHRISTENSEN.

ELECTRIC HEATING AND COOKING STOVE.

APPLICATION FILED SEPT. 25, 1914.

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\ APPLICATION FILED SEPT. 25, {914.

ratenmea Mar.23,1915.

3 EHEETir-BHEBT 3.

UNITED STATES PATEN T OFFICE.

Specification of Letters Patent.

' Patented Mar. 23, 1915.

. Application filed September 25, 1914. Serial No. 863,501.

' T all fwiwm it may concern: I ARTHUR O. CHRISTEN- Be it known that I, SEN, a citizen of the United States, residing at Franklin Furnace, in the county of Sussex and State of New Jersey, have in vented certain new and useful Improve ments in Electric Heating and Cooking Stoves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

his'invention comprehends certain new useful improvements in electric heating its primary a stove of this character lfvvhich' will be exceedingly simple and cheap :in construction and highly eilicient in use.

Another object is to provide a stove of this character which will be formed in such manner that a continual circulation of air through the same and over the heating coils may be had, thereby increasing the efficiency stove.

of the stove and still permitting the same to serve as either a heating stove or a cook Theinvention has for a further object to provide an electric stove which will be ormed in such manner that the heating coils or wires thereof will be exposed to view and yet be thoroughly protected and prevented from coming in contact with the clothes or other inflammable material and thereby causing a fire.

The invention has for a further object to provide stove of this character, the body of which will be constructed of non-heat conducting material or poor heat conducting material and in which may be positioned and supported a plurality of cross members or plates formed of a material which is not openings through conductive electrically" and provided with which a heating coil or wire 1S extended and connected to binding posts, a suitable cover being provided for the body of the stove to protect the coils or wires over which an electric current may pass, the coilsor wires being in the path of the draft of air passing through the body of the stove.

The invention has for a further object to provide a stove of this character which will be constructed insuch manner that when used as a heating stove, the air passing over and between the wires will serve to keep them comparatively cool.

The invention has for a ject to provide a stove or this character Which Will be constructed in such manner that when used as a cooking stove, the obrest upon the top of hot air from the top of the stove, ing the wires to become much hotter, thereby reducing their electrical conductivity and reducing the consumption of electricity causwhile the heat produced is intensified and causing the heated air to be concentrated on the object to be heated.

The invention has for ject to generally improve construction and operation of devices of this character and increase the efiiciency thereof without materially increasing the cost of the same.

With these and other objects in view will become more apparent as the description proceeds, the invention consists in cer tain novel features of construction, combination and arrangement of parts as will be hereinafter more fully described and claimed.

For a complete understanding of my in vention reference is to be had to the following description and accompahying draw ings, in which:

Figure l is a top with the screen or cover removed. Fig. 2 is a diagonal vertical section on the plane of line 22 of Fig. 1. Fig. 3 is a front elevation of the stove with position. F ig. 4 is a transverse sectional view on the plane of line l-4 of Fig. 3, lookingin the direction indicated by the arrow. Fig. 5 is a front elevation of a modified form of the device with the cover in position. Fig. (5 is a top plan view of the modified form of the device with the cover removed, and Fig. 7 is a transverse.vertical section on the'plane of line 7 of Fig. 6.

Referring more particularly to the drawings in which similar reference characters designate corresponding parts throughout the several views, 1 designates the bottom of the stove which'is suitably secured in the sides 2 of the frame or body of the stove which have their vertical edges interlocked, as shown at 3. The corner supporting blocks or plates 4 are secured in the corners of the body of the stove adjacent the bottom thereof, by suitable securing members 5 a still further oly and simplify the plan view of the stove passed through the same and through the 90 the screen OI cover in ill . crossed and interlocked, centers which may adjacent edges of the'sides of the body and it will be evident that the supporting blocks or plates l co'tiper'ate withthe corner mem-v her a to strengthen the frame or body of the stove and prevent outward movement of the sides 2 thereof. It will further be understood that the corner members 4 are in the form of right angled plates and positioned in the corners of the stove body and secured in position by suitable securing membersc5 and that the lower edge of the corner members a" are spaced from the upper edges of the corner supporting blocks or plates 4 a suiiicient distance to accommodate the corhere of the bottom 1 which rests upon the supporting blocks or plates l which are also preferably formed of angle iron.

The bottom 1 and sides 2 of the body of the stove are preferably formed of asbestos board or other suitable poor heat conducting material of suflicient strength to withstand the strain to which a stove body of this character is liable to be subjected.

Each of the four sides 2 of the body is provided with a central draft opening on tending upwardly from the lower edge of said sides 2 and indicated by the numeral 6. The draft openings (Sextend from the floor to a suitable distance above the bottom of the stove body to permit air to enter the stove body immediately above the bottom 1 and pass upwardly in said body and out of the open top thereof, the air being heated as it travels upwardly in thestove frame, as will readily be apparent.

Fositioned vertically in the stove body and having interlocking engagement with one another, are the crossed wire supporting plates 7 which extend from the upper face of the'bottom l to the upper edge of the sides 2 of the stove body, said plates 7 being interlocked with one another by means. of the transverse slits 8, each plate having its slit extending inwardly from one side only to the center thereof and one 'of said plates being inverted so that when the plates are forced together-and interlocked, their upper and lower edges are flush with one another.

The plates 7 are positioned diagonally in the stove body and have beveled along their vertical edges for engagement in the corner members 4' to positively prevent movement of the plates 7. lhe plates are provided in their body portions with vertical and horizontal rows of perforations 10 to opposite sides of the of said plates 7 to receive a suitable heating Wire 11 be passed through the perforations 10 in any ,suitablemanner and has its opposite ends secured to the binding osts 12 secured in suitable openings in the ottoin l and by means of which the wire 11 a connected with any suitable source in energy; it will be understood .drop upon the wire 11.

their opposite faces F 1g; 5 get er with interlocking dovetailed extenincense that the perforations of each row are preferably offset from the perforations of the adjacent row or ble number rows andany s'irita of rows of perforations may be provided in .each half of each plate 7; It will further be understood that any suitable wire haying sufiicient electrical resistance so as not torequire an excessive length of wire, and which will not deteriorate by being subjected to heat and air and will serve as a heat distributing or heating wire, may be employed. It will be understood, however, that the wire 11 is to'be passed through the perforations 10 in such manner as not to cross the wire and while, aspr'eviously stated, any suitable wire may be employed, I prefer to employ nichrome ribbon.

It will be evident, that during useof the stove, there will of air through the body from the draft openings 6 to the top of the stove and cutof the same, the air coming in contact with the heating wire 11 and being heated there; by as it passes upwardly through the body of thestove. It will further be seen that thebottoni 1 will serve to protect the floor or other support upon which the stove is be a; continuous circulat on positioned and eliminate all danger i of setting fire to the same.

In order to protect the heating wire 11 and also prevent objects from" falling into the stove, I 13 formed of punched steel metal, wire screening, or suitable strips of metal or tlfe like placed across one another and overlapped, as will be readily apparent from Fig. 3 of the drawings, thereby providing spaces between the strips for the passage of the heated air, said spaces being of such size, however, that it will be impossible for large articles to pass through the same and In Figs. 5 to 7 inclusive 1 have shown a modined form of the invention in which the sidesfi are of substantially the same construction as in the preferred form of the device with the exception of the central openings 16 in the lower which extend u wardly only to the bottom or lower face 0 the bottom 17 of the stove body. The bottom 17 is secured in the sides 15 of the body of-the stove by having'its edges extended in recesses 18 in the vertical edges of the openings 16, as clearly shown in and the sides 15 may be secured tosions formed along their vertical edges and secured in corres onding recesses, as clearly' shown atv19 in ig. 5. The sides Li may-be secured together in any suitable or .well known manner and" the material of which the sides 15 are formed may beasbestos or any other poor heat condncting material, Positioned P e rro iteicorn rs'ofvt, bottom 17 are'the corner-supportingbloc portions thereof,

have provided a screen or cover Egrtition 21 a space 26 which serve to sudpport the horizontal ttom 17, and while the bottom 1'2 is prw vided with a central air passage 22, the horizontal partition 21 is. provided with side air passages 23 .in the four sides thereof and extending inwardly for spaced distances from the edges of said horizontal partition 21. The lower or bottom edges of the diagonal crossed wire supporting lates 24 rest upon the upger face of-the 'orizontal partition 21 an are provided with the horizontal and vertical rows of perforations 25 the same as the supporting plates in the preferred form the wire 26 at any poinhthe oppoof said wire 26 being secured to the binding posts 27, extending upwardly zthrough the horizontal partition 21 and comprising the threaded upstanding inner ends of the rods 28, the main portions of which extend horizontally and are en through suitable openings 29 formed in the front side of the body of the stove between the bottom 17 and horizontal partition 21. It will be understood that the partitions of supporting plate 24am each provided with inwardly directed slits .the sameas in the preferred form, in order that the supporting plates .24 may be interlocked as they are crossed" at their center after invertin one plate, as clearly shown at 26 Fig. 7. t will also be understood that the stove shown inthe modified form may be provided with a cover similar to the form of cover used in distance above the offthe device with the perforations of one row offset from, a the perforations of the adjacent row or rows 1 and adapted to receivea current conducting wire 26 passed through said perforations 25 in such manner as to eliminate danger of cromiu site en gaged the preferred form of the device and consisting of the crosed strips 27 having their opposite ends bent downwardly and secured to a lower continuous strip 28, as clearly shown in Fig. 5 of the drawings.

While the preferred embodiments of the invention have been shown and illustrated, it will be understood that p the details of construction, and arrangements of parts may be made without departing from the spirit and scope of the inventiori as claimed or sacrificing an of the advantages thereof.- For example, t e stove may be provided with any form of protect- .portin plates being interlocked. at their osts positioned crosse centers, binding0 through one side of the y and u wardly through the horizontal partition, and a heating wire engaged through openings in the su portin lates and havin its 0 osite en ds securi to said bindin p osts. v

In testimony whereof I a my signature in presence of two witnesses.

ARTHUR 0. CHRISTENSEN.

Witnesses:

Cnannns K. Cnorrna, BEULAH M. CLoPrnm.

minor changes in. 

